PT-2026-20358 · Totolink · Totolink A3002Ru

0Xmania · Published 2026-02-17 · Updated 2026-03-16 · CVE-2026-26732

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions TOTOLINK A3002RU version 2.1.1-B20211108.1455

Description The TOTOLINK A3002RU router firmware contains a stack-based buffer overflow. The issue is located in the formFilter function and is triggered through the vpnUser and vpnPassword parameters.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, avoid using the vpnUser and vpnPassword parameters.

Exploit

Fix

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-787

Related Identifiers

CVE-2026-26732

Affected Products

Totolink A3002Ru

References · 8

• 🔥 https://github.com/0xmania/cve/tree/main/TOTOLINK-A3002RU-boa-formFilter-StackOverflow · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-26732 · Security Note
• https://osv.dev/vulnerability/CVE-2026-26732 · Vendor Advisory
• https://t.me/cveNotify/152577 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2023859535761309752 · Twitter Post
• https://t.me/cveNotify/155116 · Telegram Post
• https://t.me/CVEtracker/44898 · Telegram Post
• https://twitter.com/DavidMarquet19/status/2033453252365185071 · Twitter Post